Merge branch 'master' into liuyang

LAPTOP-T815PCOQ\25526

2025-01-13 d2e6f402c0705170c83cffef1b09bf3994a9127f

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#pragma once
 
class IObserver
{
public:
    virtual void setPriority(int nPriority) = 0;
    virtual void subscribe() = 0;
    virtual void unsubscribe() = 0;
};